Dress code policy in an office

I used to work for an organization that had a very lenient dress code. It started out fine, most people dressed business causal, but within a year, it got way out of hand. Since we had a lot of clients fly in from out of state for trainings, and etc, it became very apparent that some rules needed to be put into place to ensure customers did not lose respect for us when they visited. What do you think about this statement?